Google Earth Engine ——数据全解析专辑（COPERNICUS/S5P/NRTI/L3_O3） O3 浓度的实时高分辨率图像数据集

NRTI/L3_O3

This dataset provides near-real-time high-resolution imagery of total column ozone concentrations. See also COPERNICUS/S5P/OFFL/L3_O3_TCL for the tropospheric column data.

In the stratosphere, the ozone layer shields the biosphere from dangerous solar ultraviolet radiation. In the troposphere, it acts as an efficient cleansing agent, but at high concentration it also becomes harmful to the health of humans, animals, and vegetation. Ozone is also an important greenhouse-gas contributor to ongoing climate change. Since the discovery of the Antarctic ozone hole in the 1980s and the subsequent Montreal Protocol regulating the production of chlorine-containing ozone-depleting substances, ozone has been routinely monitored from the ground and from space.

For this product, there are two algorithms that deliver total ozone: GDP for the near real-time and GODFIT for the offline products. GDP is currently being used for generating the operational total ozone products from GOME, SCIAMACHY and GOME-2; while GODFIT is being used in the ESA CCI and the Copernicus C3S projects. More information. Product user manual

NRTI/L3_O3

该数据集提供了总臭氧浓度的近实时高分辨率图像。另见 COPERNICUS/S5P/OFFL/L3_O3_TCL 了解对流层柱数据。

在平流层，臭氧层保护生物圈免受危险的太阳紫外线辐射。在对流层，它作为一种有效的清洁剂，但在高浓度下，它也会对人类、动物和植物的健康有害。臭氧也是导致持续气候变化的重要温室气体贡献者。自从 1980 年代发现南极臭氧空洞和随后的《蒙特利尔议定书》对含氯消耗臭氧层物质的生产进行了规定，臭氧已被定期从地面和空间监测。

对于该产品，有两种算法可以提供总臭氧：近实时的 GDP 和离线产品的 GODFIT。目前国内生产总值被用于生成来自国美、SCIAMACHY 和 GOME-2 的业务总臭氧产品；而 GODFIT 正在 ESA CCI 和 Copernicus C3S 项目中使用。更多信息。产品使用说明

NRTI L3 Product

To make our NRTI L3 products, we use harpconvert to grid the data.

The qa value is adjusted before running harpconvert to satisfy all of the following criteria:

• ozone_total_vertical_column in [0, 0.45]
• ozone_effective_temperature in [180, 260]
• fitted_root_mean_square > 0.01

Example harpconvert invocation:

harpconvert --format hdf5 --hdf5-compression 9
-a 'O3_column_number_density_validity>50;derive(datetime_stop {time});
bin_spatial(2001, 50.000000, 0.01, 2001, -120.000000, 0.01);
keep(O3_column_number_density,O3_column_number_density_amf,
O3_slant_column_number_density,O3_effective_temperature,cloud_fraction,
sensor_azimuth_angle,sensor_zenith_angle,solar_azimuth_angle,
solar_zenith_angle)'
S5P_NRTI_L2__O3_____20180710T230038_20180710T230538_03840_01_010000_20180711T005227.nc
output.h5

• Assets between the dates 2018-07-10 and 2018-07-18 are missing due to non-standard structure of product files.

Dataset Availability

2018-07-10T11:02:44 - 2021-09-05T00:00:00

Dataset Provider

European Union/ESA/Copernicus

Collection Snippet

ee.ImageCollection("COPERNICUS/S5P/NRTI/L3_O3")

Resolution

0.01 degrees

Bands Table

* = Values are estimated

影像属性：

代码：

var collection = ee.ImageCollection('COPERNICUS/S5P/NRTI/L3_O3')
  .select('O3_column_number_density')
  .filterDate('2019-06-01', '2019-06-05');
var band_viz = {
  min: 0.12,
  max: 0.15,
  palette: ['black', 'blue', 'purple', 'cyan', 'green', 'yellow', 'red']
};
Map.addLayer(collection.mean(), band_viz, 'S5P O3');
Map.setCenter(0.0, 0.0, 2);